Physics
Scientific paper
Sep 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000georl..27.2989m&link_type=abstract
Geophysical Research Letters, Volume 27, Issue 18, p. 2989-2992
Physics
23
Hydrology: Groundwater Transport, Physical Properties Of Rocks: Fracture And Flow, Physical Properties Of Rocks: Permeability And Porosity, Physical Properties Of Rocks: Transport Properties
Scientific paper
We study experimentally and numerically the permeability of a rough fracture at laboratory scale when viscous forces are dominating (low Reynolds number). The experimental setup includes a granite fracture surface (10×10cm2) opened in mode I. It allows a continuous opening of the fracture parallel to its mean plane. The fracture roughness is measured and characterized in terms of self-affine heterogeneities. Its isotropy is checked. The departure from the cubic law is measured as a function of the aperture opening (for mean separations between 4.0 and 10.3 mm) and the pressure drop orientation by rotating the fracture by 90 degrees. A strongly anisotropic hydraulic behavior is observed and results from the geometrical heterogeneities that exist up to the fracture macro-scale.
Meheust Yves
Schmittbuhl Jean
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